📢 New Paper! Sequestration by the Biological Carbon Pump: Do We Really Know What We’re Talking About?

OceanICU colleague Andre Visser (DTU) proposes a distinction to help clarify how this fundamental BCP metric is reported. aslopubs.onlinelibrary.wiley.com/doi/10.1002/...

#SciencePaper #HorizonEU

Glacier biogeochemical cycling and downstream impacts - Nature Reviews Earth & Environment Far from frozen and sterile environments, glaciers are biogeochemical reactors and regulators. This Review outlines key biogeochemical and associated physical processes occurring in glacierized enviro...

How do glaciers drive and interact with Earth's regional and global biogeochemical cycles? ❄️🏔️🦠🪨🌊🌎🧪⚒️

@natrevearthenviron.nature.com

Expertly led by Jon Hawkings & many collaborators

@mioceanologie.bsky.social @cnrs.fr @cnrs-dr12.bsky.social @cnrs-insu.bsky.social

www.nature.com/articles/s43...

New paper out! 🚨
“Assessing the adoption of the FAIR principles in Italian environmental research infrastructures”
We explore how 14 RIs are putting #FAIRdata into practice — key to building more open, reusable, and connected environmental science.
🧪 🌊 🧬 🪨

Ocean stratification in a warming climate Nature Reviews Earth & Environment, Published online: 30 September 2025; doi:10.1038/s43017-025-00715-5Ocean stratification — density-related layering of seawater — influences oceanographic and climatic processes. This Review outlines observed and projected changes in stratification, noting a 0.8% dec−1 increase in 0–2,000 m stratification from 1960–2024, and a further 1.4% dec−1 increase by 2100 under SSP2-4.5.

New online! Ocean stratification in a warming climate

Weather and climate extremes in a changing Arctic Nature Reviews Earth & Environment, Published online: 21 October 2025; doi:10.1038/s43017-025-00724-4Rare and extreme climate events have increasingly occurred in the Arctic since ~2000. This Review outlines the observed and projected changes in atmospheric, oceanic and cryospheric extremes and explains their increasing occurrence through a ‘pushing and triggering’ framework.

New online! Weather and climate extremes in a changing Arctic

Atlantification drives recent strengthening of the Arctic overturning circulation A less ice-covered Arctic shifts dense water formation northward, strengthening the Arctic Ocean overturning circulation.

Deep water formation decreased in the Nordic Sea during 1993-2020. This decrease was countered by an increase in deep water formation near the Arctic Mid-Ocean Ridge. Thus, the transport of dense overflow waters to the AMOC's lower limb remained unchanged: 🌊 www.science.org/doi/10.1126/...

a–f, Multidecadal time series of water temperature, salinity and oxygen saturation concentration in the Atlantic water layer from repeated observations at different stations (Svinøy (a), Gimsøy (b), Northern Norwegian Sea (c), Fram Strait (d), Barents Sea Opening (e) and Eastern Barents Sea (f)), covering the pathway from the Atlantic-origin Nordic Seas to the Atlantic gateways. The station numbers a–f correspond to locations indicated in g. Linear regression trends are shown for two distinct periods: thick dashed lines represent the period from 1980 to 2006, corresponding to the inflow of Atlantic water into the Canada Basin (1994–2021); thin dashed lines represent the period from 2007 to 2020, projecting potential changes in the Canada Basin from 2022 onwards; grey dashed lines represent the overall trend from 1980 to 2020. rT, rS and rO2 denote the trends in water temperature, salinity and O2 saturation, respectively. g, Schematic circulation of the Atlantic and Pacific waters of the Arctic Ocean. Three Arctic gateways are indicated by black lines. Red and pink arrows denote the circulation of Atlantic water, dashed pink arrows denote the circulation of Pacific water, blue arrows denote the circulation of surface waters51. Yellow arrows represent the locations of six observational sites corresponding to a–f.

Let's say it all together again: "A warmer ocean is an oxygen-poor ocean". Yet more evidence of that, this time from the Arctic Ocean, which is getting way warmer faster than you'd like to imagine. 🧪🌊

Link: www.nature.com/articles/s41...

The Mackenzie Trough in the Beaufort Sea

Increased permafrost thaw is an unfortunate effect of rapid Arctic warming. Kim et al., investigate how permafrost thaw has affected the sources of organic carbon in sediments from the Mackenzie Trough in the Canadian Beaufort Sea 🌊 🐻‍❄️

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

🌊 👏 💪

Large live biomass carbon losses from droughts in the northern temperate ecosystems during 2016-2022 - Nature Communications Drought, fires, and human activities have reversed the accumulation of live biomass carbon in the Northern Hemisphere, with total biomass shifting from a positive to a negative trend around 2016.

🌿🌊🧪
www.nature.com/articles/s41...

Synthesis of data products for ocean carbonate chemistry Abstract. As the largest active carbon reservoir on Earth, the ocean is a cornerstone of the global carbon cycle, playing a pivotal role in modulating ocean health and regulating climate. Understandin...

‼️ Check out our new discussion paper "Synthesis of data products for ocean carbonate chemistry" led by Liqing Jiang.
🌊

essd.copernicus.org/preprints/es...

Plant diversity dynamics over space and time in a warming Arctic Nature - Warming temperatures and interactions between plants are the main drivers of changes in Arctic plant communities in response to climate change, and there is no evidence of overall biotic...

🌿❄️🏔️🧪 rdcu.be/ekf3M

Arctic fjord ecosystem adaptation to cryosphere meltdown over the past 14,000 years Communications Earth & Environment - In the Arctic cryosphere, phytoplankton communities changed abruptly with variable sea ice cover and glacial ice loss in the last 14,000 years, according to...

🌊 rdcu.be/ejJu1

Recent intensified riverine CO2 emission across the Northern Hemisphere permafrost region Nature Communications - Climate warming causes riverine CO2 emissions increasing at 0.42 ± 0.16 Tg C yr⁻1 in the Northern Hemisphere permafrost regions during 2000–2020.

Easter paper 🌊 rdcu.be/eire1

The upper halocline layer of the Arctic https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GB008342

Enjoyed reading this in Global Biogeochemical Cycles this morning, an epic @geotraces.bsky.social summary of how elements move from the Pacific into the Arctic 🌊 🐻‍❄️

agupubs.onlinelibrary.wiley.com/doi/full/10....

Job Vacancies - Universität Bremen Offene Stellen

🚨Permanent job alert🚨 At @marumunibremen.bsky.social @unibremen.bsky.social, we are looking for a new professor in the field of Marine Geology. Check out the job description and how to apply here 👇
www.uni-bremen.de/en/universit...

First page of the paper including the abstract

Locations of new AT and CT data (2005–2023) in the global ocean and the western Mediterranean Sea (white box, inset) in the SNAPO-CO2-v2 dataset. Color code is for year. Figure produced with ODV (Schlitzer, 2018).

‼️ Check out our new paper led by Nicolas Metzl on "An updated synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2023: the SNAPO-CO2-v2 dataset". 🌊

Postdoctoral Fellow in Marine Carbon Cycle Science (275511) | University of Bergen Job title: Postdoctoral Fellow in Marine Carbon Cycle Science (275511), Employer: University of Bergen, Deadline: Thursday, March 6, 2025

Exciting job opportunity to work with ICOS-Norway in Bergen 🌊
www.jobbnorge.no/en/available...

Autonomous Sensor for In Situ Measurements of Total Alkalinity in the Ocean Total alkalinity (TA) is one of the measurable parameters that characterize the oceanic carbonate system. A high temporal and spatial frequency in TA data can lead to better measurements, modeling, and understanding of the carbon cycle in aquatic systems, providing insights into problems from global climate change to ecosystem functioning. However, there are very few autonomous technologies for in situ TA measurements, and none with field demonstrations below 2 m depth. To meet this need in marine observing capabilities, we present a submersible sensor for autonomous in situ TA measurements to full ocean depths. This sensor uses lab-on-a-chip technology to sample seawater and perform single-point open-cell titration with an optical measurement. It can carry multiple calibration materials on board, allowing for routine recalibration and quality checks in the field. The sensor was characterized in the laboratory and in a pressure testing facility to 600 bar (equivalent to 6 km depth) and deployed in a shallow estuary, on a lander at 120 m depth, and on an autonomous underwater vehicle. With a demonstrated precision and accuracy regularly better than 5 μmol kg–1 in field deployments, this sensor has the potential to dramatically expand our ability to perform long-term autonomous measurements of the marine carbonate system.

🌊I would have one of these for my PhD thesis…
pubs.acs.org/doi/full/10....

2 year Postdoc in Biomarker Paleoclimatology - Vacancy at Aarhus University Vacancy at Department of Geoscience, Aarhus University

📣 As part of my DFF-funded project, WARMEST, I'm hiring a biomarker-loving postdoc to join my group and examine terrestrial climate + environment of the western Sahel during the Eocene.

Applications are due Feb 15th - contact me with any questions!

RT plz :)

international.au.dk/about/profil...

Combined CH4, N2O, and CO2 Fluxes Reveal a Net Carbon Sink Across a Glacier‐Ocean Continuum A rapidly-retreating marine-terminating glacier exported CH4 to nearshore waters N2O was undersaturated near the glacier front The regional CO2 sink greatly outweighs CH4 and N2O emissions

🌊 agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Gianmarco Ingrosso ‪IRET - CNR‬ - ‪‪722 citazioni‬‬ - ‪oceanography‬ - ‪biogeochemistry‬ - ‪climate change‬ - ‪ocean acidification‬ - ‪marine chemistry‬

Hi, could you please add me to the science feed? Here's my Google Scholar scholar.google.it/citations?us...

Excited to share our latest paper on the greening of Svalbard! 🌊🧪🥼❄️🪨⚒️

We use a marine sediment core to reconstruct how climate change is reshaping this Arctic landscape, revealing fascinating insights into vegetation dynamics 🌱🌍🍁🌿

Read here: rdcu.be/d6uJR

Hi @davidho.bsky.social, I would like to be added as a contributor. Thank you!